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Probing Nuclear Symmetry Energy with the Sub-threshold Pion Production |
| ZHANG Fang1**,LIU Yang2,YONG Gao-Chan2,ZUO Wei2 |
1School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000
2Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 |
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ZHANG Fang**, LIU Yang, YONG Gao-Chan et al 2012 Chin. Phys. Lett. 29 052502 |
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Abstract Within the framework of the semiclassical Boltzmann–Uehling–Uhlenbeck transport model, we investigate the effects of symmetry energy on the sub-threshold pion using the isospin MDI interaction with the stiff and soft symmetry energies in the central collision of 48Ca+48Ca at the incident beam energies of 100, 150, 200, 250 and 300 MeV/nucleon. We find that the ratio of π−/π+ of sub-threshold charged pion production is greatly sensitive to the symmetry energy, particularly around 100 MeV/nucleon energies. Large sensitivity of sub-threshold charged pion production to nuclear symmetry energy may reduce uncertainties of probing nuclear symmetry energy via heavy-ion collision.
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| Keywords:
25.70.-z
21.65.Ef
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Received: 30 January 2012
Published: 30 April 2012
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| PACS: |
25.70.-z
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(Low and intermediate energy heavy-ion reactions)
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21.65.Ef
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(Symmetry energy)
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[1] Kutschera M 1994 Phys. Lett. B 340 1
Prakash M et al 1997 Phys. Rep. 280 1
Lattimer J M and Prakash M 2001 Astrophys. J. 550 426
[2] Tsang M B et al 2004 Phys. Rev. Lett. 92 92 062701
[3] Chen L W, Ko C M and Li B A 2005 Phys. Rev. Lett. 94 032701
[4] Li B A and Chen L W 2005 Phys. Rev. C 72 064611
[5] Li B A, Ko C M and Ren Z Z 1997 Phys. Rev. Lett. 78 1644
Li B A 2003 Phys. Rev. C 69 034614
[6] Xu H S et al 2000 Phys. Rev. Lett. 85 716
[7] Tan W P et al 2001 Phys. Rev. C 64 051901 (R)
[8] Li B A 2000 Phys. Rev. Lett. 85 4221
[9] Chen L W et al 2003 Phys. Rev. Lett. 90 162701
Chen L W et al 2003 Phys. Rev. C 68 014605
[10] Zhang Y and Li Z 2005 Phys. Rev. C 71 024604
[11] Shi L and Danielewicz P 2003 Phys. Rev. C 68 064604
[12] Li B A 2001 Phys. Rev. C 64 054604
[13] Tsang M B et al 2012 arXiv:1204.0466v1[nucl-ex]
[14] Xiao Z G, Li B A, Chen L W, Yong G C and Zhang M 2009 Phys. Rev. Lett. 102 062502
Zhang M, Xiao Z G, Li B A, Chen L W, YongG C and Zhu S J 2009 Phys. Rev. C 80 034616
[15] Di Toro M, Baran V, Colonna M and Greco V 2010 J. Phys. G: Nucl. Phys. 37 083101
[16] Yong G C, Li B A, Chen L W and Zuo W 2006 Phys. Rev. C 73 034603
[17] Yong G C 2011 Phys. Rev. C 84 014607
[18] Feng Z Q and Jin G M 2010 Phys. Rev. C 82 044615
[19] Das C B, Das Gupta S, Gale C and Li B A 2003 Phys. Rev. C 67 034611
[20] Li B A et al 2004 Phys. Rev. C 69 064602
[21] Li B A et al 2004 Nucl. Phys. A 735 563
[22] Yong G C 2010 Eur. Phys. J. A 46 399
[23] Li B A, Yong G C and Zuo W 2005 Phys. Rev. C 71 014608
[24] EOS working group report https://groups.nscl.msu.edu/hira/EoS.htm |
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